A system for determining an angle α between a longitudinal axis of a vehicle and an authenticator, in particular a key or a keyless entry device for a vehicle, wherein the angle α can be calculated with the system using the formula α=(dr−dl)* kw, where dr is the calculated and/or measured distance to the authenticator from an antenna mounted on the right side in or on the vehicle, dl is the calculated and/or measured distance to the authenticator from an antenna mounted on the left side on the vehicle, and kw is a correction factor for the angle calculation that is established in a vehicle-specific manner.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The system according to claim 1, wherein the system has inputs that are used for transfer of the distance dr and/or of the distance dl and/or of difference Δd between the distances (dr, dl).
3. The system according to claim 1, wherein the distances (dr, dl) are calculated from field strengths of at least two signals that are sent by the first and second antennas mounted in or on the vehicle.
4. An authenticator for a vehicle, the authenticator comprising the system according to claim 1.
5. The system according to claim 1, wherein the system further comprises a control unit for the vehicle, wherein the control unit determines the angle.
7. A motor vehicle comprising the arrangement according to claim 6.
12. The system according to claim 1, wherein the authenticator is a key for a keyless entry system of the vehicle.
13. The system according to claim 1, wherein the first antenna is mounted on the vehicle on an opposite side of the longitudinal axis of the vehicle than the second antenna.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
March 1, 2021
March 12, 2024
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